Audio-Technica's Pro 37 is a small-diaphragm cardioid condenser microphone that excels in a variety of studio and live situations. Its wide frequency response and high SPL capacity make it ideal for miking guitars or overhead drums as well as vocal performances.     Audio-Technica Pro 37 at a Glance: Versatile professional mic for studio or live sound Wide frequency response and dynamic range, plus high SPL capacity Operates on 11 - 52 volts phantom power for compatibility with inexpensive mixers